国家/地区 中国（4）
IPC部 C（4）
IPC大类 C01（4）
IPC小类 C01D（4）
IPC C01D005/02（4）
发明人
公开年 2018（2）
申请年
专利权人

Selectively recovering lithium from lithium manganese iron phosphate, comprises reacting lithium manganese iron phosphate powder with sulfuric acid solution.

WANG J, WANG J P

Recycling waste acid resources useful for preparing graphene oxide, comprises e.g. mixing concentrated sulfuric acid, concentrated phosphoric acid, hydrogen peroxide, concentrated hydrochloric acid, heating, distilling and crystallizing.

YANG X, ZENG Y, LU N, YANG Z

Treating waste liquid produced during preparation of graphene oxide comprises adding neutralizing agent to waste liquid, when the pH is raised, and adding precipitating agent.

ZHANG Y, ZHANG X, LIU Y, MIAO X, CHEN S, CHEN Y, WANG W, CHENG J, LI D, LIN Z, LIN S, FENG W, LI X, XUE X

Treating waste water in graphene production process involves oxidizing graphite, purifying graphite, concentrating graphite, separating solid-liquid and performing multi-effect evaporation to obtain final product.

BAO N, LI C, JIANG F, SHEN L, SHI Y